[arkades]

Attending college increases pre-college IQ scores a mean of just under 20 points (I don't recall the precise number from the study now, I remember it was between 15 and 20). That's not "smarter people get into college" - that's before-and-after on the same subjects.

Growing up wealthy entails a lot more advantages than four years of courses, at that.

[rlanday]

I would like to see that study if you can find it. IQ is generally believed to become more genetic (that is, environmental effects start to wear off) as people get older.

[arkades]

Sorry, I hit up Google Scholar trying to find it but had no luck. It's not my field of expertise, so I don't know the proper jargon to throw in to get the right search results.